A supplementary clamping fixture for wire cutting
By designing an L-shaped fixing plate and an angle adjustment assembly, the wire EDM fixture achieves precise clamping and stable angle adjustment, solving the accuracy and angle problems of existing fixtures when clamping thin or large plates, and improving processing accuracy and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN XILINGKE CNC MASCH EQUIP CO LTD
- Filing Date
- 2025-09-04
- Publication Date
- 2026-08-04
AI Technical Summary
Existing wire EDM fixtures are prone to reduced machining accuracy when clamping thin or large plates, and the angle adjustment is inaccurate, affecting the machining quality.
The L-shaped fixing plate and angle adjustment assembly, combined with the plate clamping assembly, achieve bidirectional clamping and precise angle positioning. The rotating disk is fixed by the stop block and tooth structure to avoid angle drift and plate deformation.
It improves the precision and stability of wire EDM processing, ensuring that the sheet metal does not shift or deform during processing, thus meeting the requirements of precision machining.
Smart Images
Figure CN224587143U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of wire EDM fixtures and relates to an auxiliary clamping fixture for wire EDM. Background Technology
[0002] A wire EDM fixture is a device installed on an EDM wire EDM machine to hold and fix the workpiece to be processed. The fixture allows the workpiece to be placed stably during processing, preventing the workpiece from moving and causing danger to the workers and processing tools, and ensuring safety during processing.
[0003] According to the inspection institute, Chinese patent CN221363066U discloses a slow wire EDM fixture, including a base; a first support plate is fixedly connected to the top wall of the base; a rotating rod is rotatably connected to the side wall of the first support plate, and the rotating rod is connected to a second support plate through a quick-release assembly; a rotating handle is provided on one side of the first support plate, and the rotating handle is connected to the rotating rod through a transmission assembly; a fixed clamping plate is fixedly connected to the bottom wall of the second support plate; a nut is provided on the top wall of the second support plate; a movable clamping plate is provided on the side wall of the second support plate, and the movable clamping plate is connected to the nut through a clamping assembly. In use, when clamping thin or large plates, this device can only clamp one side. During wire EDM, cracks in the plate caused by cutting, combined with the weight of the plate itself, can easily cause deformation during processing, leading to cutting deviation and affecting the processing accuracy of the wire EDM. Furthermore, the device uses a worm gear for angle adjustment, and long-term use can cause wear on the tooth surface, resulting in gaps and cumulative errors in the rotating rod's rotation angle, leading to inaccurate angle adjustment and processing deviation.
[0004] Therefore, this utility model provides an auxiliary clamping fixture for wire EDM, which solves the above problems. Utility Model Content
[0005] In view of the problems existing in the prior art, this utility model discloses an auxiliary clamping fixture for wire cutting. The technical solution adopted includes an L-shaped fixing plate. A circular groove is formed on the upper right side wall of the vertical arm of the L-shaped fixing plate. A through hole is formed in the center of the circular groove. An angle adjustment component is rotatably installed inside the circular groove. The angle adjustment component includes a rotating disk. A groove is formed in the middle of the circumferential side wall of the rotating disk. Several toothed grooves are formed in the circumferential array inside the groove. A rotating shaft is fixedly connected to the left center of the rotating disk. An angle pointer is fixedly installed at one end of the rotating shaft that passes through the through hole. A rectangular groove is formed forward on the inner wall of the circular groove opposite the front side wall of the groove. A screw hole is formed forward through the front end of the rectangular groove. A stop block is slidably inserted in the rectangular groove. The front end of the stop block is rotatably engaged with the rear end protrusion of the stop screw through a groove. The stop screw is screwed into the screw hole. A plate clamping component is fixedly connected to the right end of the rotating disk.
[0006] As a preferred embodiment of this utility model, the left horizontal arm of the L-shaped fixing plate has several mounting holes, and the plate wall on the left periphery of the through holes has a circumferential array of angle markings; by opening the mounting holes, it is easy to install the device on the wire cutting machine for fixing; by opening the angle markings, it is easy to cooperate with the angle pointer to quickly rotate the plate workpiece on the right to the appropriate angle.
[0007] As a preferred embodiment of this utility model, the rectangular recess and the groove are of equal width on the left and right sides; this design ensures that the stop block, which is slidably inserted into the rectangular recess, will not rotate when it enters the groove, thus improving its stability during use.
[0008] As a preferred embodiment of this utility model, the end of the stop block facing the groove is an arc surface, and the arc surface is provided with a plurality of teeth that are adapted to the tooth groove; by providing teeth on the arc surface, it is convenient to quickly insert into the tooth groove on the rotating disk, fix the angle of the rotating disk, and improve the stability of the angle fixation.
[0009] As a preferred embodiment of this utility model, the plate clamping assembly includes a connecting block fixedly connected to the rotating disk. An L-shaped clamping frame is fixedly connected to the right end of the connecting block. A rectangular through slot is formed through the middle of the front side wall of the L-shaped clamping frame. A first slot is formed in the middle of the right side of the left side wall of the L-shaped clamping frame. Adjusting screws are rotatably inserted into the left and right sides of the rectangular through slot. A moving arm is threaded onto the adjusting screws. The moving arm is slidably inserted into the rectangular through slot, and sliding grooves are formed at the top and bottom of one end of the moving arm. A second slot is formed on the side wall of the moving arm facing the first slot. Several clamping screws are evenly formed from front to back on the upper side walls of the first and second slots. By using the plate clamping assembly, it is convenient to clamp plate workpieces of different thicknesses and sizes on both sides within a certain range, thereby avoiding the deformation of the plate during the online cutting process, which is caused by the cracks cut on the plate and the weight of the plate itself.
[0010] As a preferred embodiment of this utility model, anti-slip strips are fixedly provided on the inner sidewalls of the first slot and the second slot respectively; by using anti-slip strips, displacement of the plate is prevented during rotation.
[0011] The beneficial effects of this utility model are:
[0012] 1. The mounting holes on the horizontal arm of the L-shaped fixing plate can stably fix the fixture to the wire EDM machine, ensuring overall processing stability. The angle markings on its vertical arm cooperate with the angle pointer of the angle adjustment component to intuitively read the rotation angle of the rotating disk and achieve precise angle positioning. In the angle adjustment component, the stop screw pushes the stop block to slide along the rectangular groove. The teeth on the arc surface of the stop block are tightly engaged with the teeth in the groove of the rotating disk, which can quickly lock the position of the rotating disk and avoid processing angle drift.
[0013] 2. The L-shaped clamping frame of the sheet metal clamping assembly, together with the moving arm driven by the adjusting screw, achieves bidirectional clamping of the sheet metal on both sides through the first and second slots, replacing the traditional single-sided clamping, effectively preventing sheet metal deformation. The anti-slip strips in the slots can prevent displacement of the sheet metal during rotation. The threaded drive of the adjusting screw can also flexibly adapt to sheets of different thicknesses and widths without replacing the main clamping body. The clamping screws can further reinforce the sheet metal, significantly improving operating efficiency and processing accuracy, and meeting the requirements of precision sheet metal wire cutting. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a sectional view of the L-shaped fixing plate of this utility model;
[0016] Figure 3 This is a cross-sectional view of the angle adjustment component of this utility model;
[0017] Figure 4 This is a partial cross-sectional view of the angle adjustment component of this utility model;
[0018] Figure 5 This is a schematic diagram of the sheet metal clamping assembly of this utility model;
[0019] Figure 6 This is a cross-sectional view of the movable arm of the plate clamping assembly of this utility model.
[0020] In the diagram: 1-L-shaped fixing plate, 2-Angle adjustment assembly, 3-Plate clamping assembly, 11-Circular countersunk groove, 12-Through hole, 13-Rectangular countersunk groove, 14-Screw hole, 15-Mounting hole, 16-Angle indicator, 21-Rotating disk, 211-Groove, 212-Groove, 22-Rotating shaft, 23-Angle pointer, 24-Stop block, 25-Stop screw, 241-Tooth, 31-Connecting block, 32-L-shaped clamping frame, 321-Rectangular through groove, 322-First slot, 33-Adjusting screw, 34-Moving arm, 341-Slide groove, 342-Second slot, 35-Several clamping screws, 36-Anti-slip strip. Detailed Implementation
[0021] Example 1
[0022] like Figures 1 to 6As shown, the auxiliary clamping fixture for wire cutting according to this utility model adopts the following technical solution: It includes an L-shaped fixing plate 1. A circular countersunk groove 11 is formed on the upper right side wall of the vertical arm of the L-shaped fixing plate 1. A through hole 12 is formed in the center of the circular countersunk groove 11. A rectangular countersunk groove 13 is formed on the inner wall of the circular countersunk groove 11, which is directly opposite the front side wall of the groove 211. The rectangular countersunk groove 13 is of equal width to the groove 211 on both sides. A screw hole 14 is formed at the front end of the rectangular countersunk groove 13. Several mounting holes 15 are formed on the left horizontal arm of the L-shaped fixing plate 1. The left outer periphery of the through hole 12... Angle markers 16 are arranged in a circular array on the plate wall. An angle adjustment component 2 is rotatably installed inside the circular recess 11. The angle adjustment component 2 includes a rotating disk 21. A groove 211 is formed in the middle of the circumferential side wall of the rotating disk 21. Several toothed grooves 212 are arranged in a circular array inside the groove 211. A rotating shaft 22 is fixedly connected to the center of the left side of the rotating disk 21. An angle pointer 23 is fixedly installed at one end of the rotating shaft 22 that passes through the through hole 12. A stop block 24 is slidably inserted in the rectangular recess 13. The end of the stop block 24 facing the groove 211 is an arc surface. A plurality of teeth 241 adapted to the toothed groove 212 are provided. The front end of the stop block 24 is rotatably engaged with the rear end protrusion of the stop screw 25 through a groove. The stop screw 25 is screwed into the screw hole 14. The right end of the rotating disk 21 is fixedly connected to the plate clamping assembly 3. The plate clamping assembly 3 includes a connecting block 31 fixedly connected to the rotating disk 21. The right end of the connecting block 31 is fixedly connected to an L-shaped clamping frame 32. A rectangular through groove 321 is formed from the middle of the front side wall of the L-shaped clamping frame 32 to the rear. The middle of the right side of the left side wall of the L-shaped clamping frame 32 is opened. A first slot 322 is provided. Adjusting screws 33 are rotatably inserted into the left and right sides of the rectangular through slot 321. A movable arm 34 is threaded onto the adjusting screws 33. The movable arm 34 is slidably inserted into one end of the rectangular through slot 321, and sliding grooves 341 are respectively opened at the top and bottom. A second slot 342 is opened on the side wall of the movable arm 34 facing the first slot 322. A plurality of clamping screws 35 are evenly opened from front to back on the upper side walls of the first slot 322 and the second slot 342. Anti-slip strips 36 are fixedly installed on the inner side walls of the first slot 322 and the second slot 342 respectively.
[0023] The working principle of this utility model is as follows: During use, the entire auxiliary clamping fixture is fixed to the designated position of the wire cutting machine tool through the mounting hole 15 on the left horizontal arm of the L-shaped fixing plate 1, ensuring that the fixture base is not loose. Next, the plate is clamped by inserting one side of the plate to be processed into the first slot 322 on the left side wall of the L-shaped clamping frame 32. Then, the adjusting screw 33 in the rectangular through groove 321 is rotated. The adjusting screw 33 drives the threaded movable arm 34 to slide along the sliding groove 341 of the movable arm 34 through the rectangular through groove 321, ensuring smooth sliding until the second slot 342 of the movable arm 34 and the first slot 322 together clamp the plate. At this time, the anti-slip strips 36 on the inner sidewalls of the first slot 322 and the second slot 342 increase the friction between the plate and the slots, preventing plate displacement. The clamping screws 35 on the first slot 322 and the second slot 342 further lock the upper and lower positions of the plate. Then, the plate is further... To adjust the angle, manually rotate the angle pointer 23 to drive the rotating shaft 22 to rotate. The rotating shaft 22 drives the rotating disk 21 in the circular recess 11 to rotate. After the tip of the angle pointer 23 points to the scale corresponding to the angle mark 16, the operator determines the target processing angle of the workpiece by observing the correspondence between the angle pointer 23 and the angle mark 16 on the left outer side of the through hole 12. When the angle is adjusted to the correct position, turn the handle at the front end of the stop screw 25 in the screw hole 14 clockwise. The protrusion at the rear end of the stop screw 25 pushes the stop block 24 to slide along the rectangular recess 13 towards the groove 211 until the teeth 241 of the arc surface of the stop block 24 are embedded in the tooth groove 212 of the groove 211 of the rotating disk 21, thereby locking the angle of the rotating disk 21. Finally, start the wire cutting equipment and use the clamping space of the plate clamping assembly 3 to complete the plate processing. The fixture structure is stable throughout the process, which can effectively avoid angle deviation and plate deformation.
[0024] Electrical connection methods or structures not described in detail in this article are existing technologies.
[0025] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.
Claims
1. An auxiliary clamping fixture for wire EDM, characterized in that: The device includes an L-shaped fixing plate (1), with a circular recess (11) on the upper right side wall of the vertical arm of the L-shaped fixing plate (1). A through hole (12) is formed in the center of the circular recess (11). An angle adjustment assembly (2) is rotatably installed inside the circular recess (11). The angle adjustment assembly (2) includes a rotating disk (21). A groove (211) is formed in the middle of the circumferential side wall of the rotating disk (21). Several toothed grooves (212) are formed in a circumferential array inside the groove (211). A rotating shaft (22) is fixedly connected to the center of the left side of the rotating disk (21). The rotating shaft (22) passes through... An angle pointer (23) is fixedly mounted on one end of the through hole (12). A rectangular groove (13) is opened forward on the inner wall of the circular groove (11) facing the front side wall of the groove (211). A screw hole (14) is opened forward through the front end of the rectangular groove (13). A stop block (24) is slidably inserted in the rectangular groove (13). The front end of the stop block (24) is rotated and engaged with the rear end protrusion of the stop screw (25) through the groove. The stop screw (25) is screwed into the screw hole (14). The plate clamping assembly (3) is fixedly connected to the right end of the rotating disk (21).
2. The auxiliary clamping fixture for wire EDM according to claim 1, characterized in that: The left horizontal arm of the L-shaped fixing plate (1) has several mounting holes (15), and the plate wall on the left outer periphery of the through hole (12) has a circumferential array of angle markings (16).
3. The auxiliary clamping fixture for wire EDM according to claim 1, characterized in that: The rectangular sink (13) and the groove (211) are of equal width on the left and right.
4. The auxiliary clamping fixture for wire EDM according to claim 1, characterized in that: The stop block (24) has an arc surface at one end facing the groove (211), and the arc surface is provided with a plurality of teeth (241) that are adapted to the tooth groove (212).
5. The auxiliary clamping fixture for wire EDM according to claim 1, characterized in that: The plate clamping assembly (3) includes a connecting block (31) fixedly connected to the rotating disk (21). An L-shaped clamping frame (32) is fixedly connected to the right end of the connecting block (31). A rectangular through groove (321) is opened through the middle of the front side wall of the L-shaped clamping frame (32) from rearward. A first slot (322) is opened in the middle of the right side of the left side wall of the L-shaped clamping frame (32). Adjusting screws (33) are rotatably inserted into the left and right sides of the rectangular through groove (321). A moving arm (34) is threadedly connected to the adjusting screw (33). A sliding groove (341) is opened at the top and bottom of one end of the moving arm (34) that is slidably inserted into the rectangular through groove (321). A second slot (342) is opened on the side wall of the moving arm (34) facing the first slot (322). Several clamping screws (35) are evenly opened from front to back on the upper side walls of the first slot (322) and the second slot (342).
6. The auxiliary clamping fixture for wire EDM according to claim 5, characterized in that: Anti-slip strips (36) are fixedly provided on the inner sidewalls of the first slot (322) and the second slot (342), respectively.